Four suspected drug traffickers have been barred from leaving Guatemala after the U.S Treasury Department accused them of involvement in a multimillion dollar cocaine smuggling ring.

Judge Gisela Reinoso says the four must stay in the country while prosecutors look into the U.S. charges.

The U.S. Treasury Department accuses Marllori Dadiana Chacon Rossell of running a ring that moved tons of cocaine through Guatemala into Mexico and on to the United States. The travel ban also applies to her husband and the two owners of Bingoton Millonario, a popular private national lottery that the U.S. accused of being a money-laundering front.